4820 results about "Linear motion" patented technology

An example computing device includes a flexible display coupled to a housing that includes a support plate having a first joint coupled to a first end of the support plate and a second joint coupled to a second end of the support plate. A slide module has a slot that guides a linear slide movement of the second joint along a linear path of movement within the slot as the support plate pivots about the first joint, where the support plate moves according to the first joint and the second joint to support at least the portion of the flexible display when the flexible display is unfolded and moves according to the first joint and the second joint to create a gap between at least a portion of the support plate and at least the portion of the flexible display when the flexible display is folded.

The invention discloses an under-actuated core column type continuum robot for a narrow space task, and belongs to the technical field of multi-degree-of-freedom redundant continuum robots. Comprising a driving device, a plurality of motors are used for controlling winding and unwinding combination of a driving rope, flexible movement of a mechanical arm is achieved, and an expected working pose is achieved. And the guide rail is moved to push the platform, linear motion is executed in the lead range, and the mechanical arm is moved to the designated operation range. The continuum mechanical arm main body consists of N mechanical arm units with the same structure and is divided into M joint sections; a rigid-flexible coupling mode is adopted, and a universal joint structure and a core column structure are combined, so that joints can flexibly deflect, and the torsional rigidity and the overall load capacity are improved; and the end effector is used for executing diversified tasks according to operation requirements. The robot provided by the invention has the advantages of high flexibility, large length-diameter ratio, high torsion resistance, high environmental adaptability and the like, and can meet the requirements of detection and operation and maintenance operation in a narrow unstructured space.

Actuator (1) for providing a torque with a linear drive (2) and a gearbox (3) for converting a linear motion into a rotary motion, wherein the gearbox (3) comprises a lever (4) which rotates a shaft (5) to be subjected to the torque, wherein the gearbox (3) further comprises a coupling element (6), the coupling element (6) being connected to the linear drive (2) via a first connection point (7) and to the lever (4) via a second connection point (8), so that energy transfer between the linear drive (2) and the lever (4) takes place exclusively via the coupling element (6), and the coupling element (6) being rotatably mounted in both connection points (7, 8).

A suspension stabilizer and method are described which may be attached to a bike having front fork suspension to improve handling and reduce rider fatigue. The suspension stabilizer may include a counterweight, a spring assembly and a guide assembly. The spring assembly may be arranged to provide a spring force between the counterweight and the guide assembly to resist linear motion of the counterweight along a guide assembly axis. The counterweight and spring assembly may have a natural motion frequency of 3 to 15 Hertz and may be based on one or more characteristics of the front fork suspension.

A vehicle-mounted GNSS positioning method based on multi-motion model interaction includes: establishing a position-constant velocity (PCV) model and a position-constant steering angular velocity (PCSAV) model for two attitudes of a carrier (i.e., linear motion and turning motion) respectively to obtain a state estimation vector and a state transition matrix of the carrier of the PCV model and the PCSAV model at a previous moment, introducing an interacting multiple model (INM), establishing a heuristic position-velocity filtering (HPV)-IMM model based on the IMM model to achieve an information filtering interaction between the PCV model and the PCSAV model, and obtaining a state estimation vector and an error covariance matrix of the carrier at a current moment, so as to obtain a position and velocity of the carrier at the current moment. The present disclosure solves the problem of low accuracy of a traditional single kinematic model in multi-motion attitude vehicle positioning.

The present application discloses a photocuring 3D printing platform and printing method. The photocuring 3D printing platform comprises: a forming platform; a middle adapter plate, the middle adapter plate being capable of being driven to drive the forming platform to do linear motion in a vertical direction; several leveling mechanisms arranged on the middle adapter plate, each leveling mechanism comprising an inclined surface block, an inclined surface positioning block abutting against a side edge of the inclined surface block, and a guide column block fixed on the middle adapter plate; and several buffer mechanisms elastically supported between the inclined surface positioning blocks and the forming platform, one end of each buffer mechanism abutting against a side edge of the corresponding inclined surface positioning block, and the other end of the buffer mechanism penetrating the middle adapter plate and then being fixedly connected to the forming platform.

The utility model relates to the technical field of precise driving and positioning, and discloses a linear motor type electric screw which comprises a screw rod, a shell, a driving mechanism, a mechanism seat and a threaded pipe. The driving mechanism is arranged in a cavity defined by the shell and the mechanism base. The driving mechanism comprises a flexible hinge, piezoelectric ceramics and a pre-tightening spring. The flexible hinge comprises a first clamping jaw and a second clamping jaw. And the first clamping jaw and the second clamping jaw provide rotating force for the screw rod under the action of the piezoelectric ceramics. And the pre-tightening springs are used for applying pre-tightening force between the first clamping jaw and the screw rod and between the second clamping jaw and the screw rod. The threaded pipe is used for supporting the threaded rod and being connected with an external mechanism. According to the utility model, the piezoelectric ceramic is adopted for driving and the flexible hinge is combined, so that precise linear motion control is realized, and the touch-free adjusting device has the characteristics of high resolution, high precision and compact structure, and realizes touch-free adjustment of the optical adjusting bracket which is difficult to touch. A plurality of linear motor type electric screws are combined for use, so that two-dimensional or three-dimensional motion control can be realized.

The invention discloses a vehicle positioning method and system, and relates to unmanned driving. According to IMU data and laser radar data, a fast-lio algorithm is used to construct a global prior map; constructing a local point cloud map according to laser radar data collected in real time; recognizing and rejecting dynamic point clouds, and carrying out NDT registration on residual static point clouds and the global prior map to obtain a laser odometer pose; extracting feature points of the camera data by adopting a shii-tomasi algorithm; a Lucas-Kanade optical flow method is used to acquire motion vectors of the feature points; calculating the speed of the feature points according to the motion vector, removing the dynamic feature points with the speed exceeding a preset threshold value, and obtaining the pose of the visual odometer; reckoning the position and course of the vehicle through a CTRV model to obtain a track reckoning result; and carrying out multi-source heterogeneous data fusion by adopting a non-destructive Kalman filtering algorithm. Aiming at the defects of dynamic environment interference and non-linear motion trail modeling existing in traditional open air and mines, the positioning stability of the unmanned vehicle is improved.

A linear actuator comprising a shaft and a nut that translates within a linear range of motion in response to relative rotation between the nut and shaft, a stop positioned at a travel limiting position and having an inner portion connected to the shaft, a radially compliant outer portion axially overlapping the inner portion and configured to rotate relative to the inner portion, and a cam roller portion disposed radially between the inner and outer portions and configured to move relative to a neutral orientation in response to relative rotation between the inner and outer portions, and the outer portion configured to radially bias the cam roller portion towards the neutral orientation; wherein rotation of the outer portion caused by the nut rotating into the outer portion provides an outward radial load at the cam roller portion on the outer portion that is absorbed by the outer portion.

The invention relates to the technical field of micro-nano precision motion, and particularly discloses a micro-nano wafer processing and detection precision motion platform, which comprises a base, a rotating module and a plurality of lifting leveling modules, the lifting leveling module comprises a horizontal driver, a first wedge block, a second wedge block and a spherical bearing; the first wedge block is slidably connected with the base in the horizontal direction. The horizontal driver is arranged on the base and is connected with the first wedge block; the second wedge block is slidably connected with the base in the vertical direction and is in wedge fit with the first wedge block. The spherical bearing is arranged on the second wedge block; the rotating module comprises a carrier plate, a wafer washing disc and a linear driver; the carrier plate is arranged on the plurality of lifting leveling module spherical bearings; the wafer washing disc is rotatably arranged on the carrier plate; the linear driver is arranged on the carrier plate, connected with the wafer washing disc and used for driving the wafer washing disc to rotate through linear motion. The motion platform provided by the scheme can realize high-precision leveling and deviation correction operation in wafer processing, detection and repair.

The invention discloses a cylindrical inner wall surface defect automatic measuring device and an identification and evaluation method. The device comprises a measuring unit, a supporting platform, a motion platform, a lengthening shaft and a control system. The measuring unit comprises one or more groups of laser profile sensors, is carried at the tail end of the lengthened shaft and is used for measuring the morphology data of the surface of the inner wall of a measured workpiece, the measuring unit is connected with the motion platform through the lengthened shaft, and the supporting platform is a V-shaped supporting platform and is used for placing the measured workpiece; the motion platform comprises an X-axis linear motion platform, a Z-axis linear motion platform and a rotary shaft motion platform; the measuring unit can realize horizontal scanning measurement, rotary scanning measurement and adjustment of a measuring range through the motion of the motion platform; and the control system is used for performing closed-loop feedback control on the X-axis linear motion platform, the Z-axis linear motion platform and the rotating shaft motion platform. According to the invention, the surface defects of the cylindrical inner wall can be automatically measured, identified and evaluated with high precision and high efficiency.

To provide a linear motion guiding device that can enhance function of high-dust proof and high-hermetic sealability by improving a seal member.SOLUTION: A linear motion guiding device includes a side seal disposed between a slider and a guide rail. The side seal includes: a retainer plate disposed on a slider side; a cover disposed on a far side from the slider relative to the retainer plate; and a seal member nipped between the cover and the retainer plate along a longitudinal direction of the guide rail. The seal member includes: a body retained by the retainer plate; and a lip part extending in a flat shape toward a guide rail side from the body. A space is formed between the retainer plate and the cover and between the body and the lip part.SELECTED DRAWING: Figure 3

An apparatus and method of use of a mechanism that converts rotary motion into linear motion are disclosed. The method includes mechanically connecting, using a first connecting component, a rotary component and one or more movable components, mechanically connecting, using a second connecting component, a plurality of gripping components and the one or more movable components, generating, using the rotary component, rotary motion about a rotational axis, transferring, using the first connecting component, the rotary motion to the one or more movable components, transferring, using the second connecting component, the off-axis motion of the one or more movable components to the plurality of gripping components and moving the plurality of gripping components linearly in opposite directions.

According to the electric direct-driven eVTOL rotor control device, a driving motor is an outer rotor motor, a stator of the driving motor is of a hollow structure, and a steering engine assembly is installed on the lower portion of the stator, upwards penetrates through the stator and is in driving connection with a variable-pitch mechanism assembly, so that the deflection angle of blades of a blade handle assembly is adjustable; the intermediate transmission link is reduced, the energy loss is reduced, the transmission efficiency is improved, and the reliability of the system is improved; the rotor mounting seat cylinder is upwards connected with the propeller hub lower cover and downwards connected with the stator mounting seat through a bearing, so that stable and reliable power transmission between the driving motor rotor and the propeller hub assembly is ensured, and vibration and noise are reduced; the anti-rotation rocker arm is arranged between the lead screw nut and the fixed ring sleeve, so that rotation interference is avoided, and the precision and stability of variable pitch control are improved; and the variable-pitch rocker arm is in running fit with the variable-pitch disc, so that the linear motion of the variable-pitch disc can be accurately converted into the deflection motion of the blades, and the accurate adjustment of the pitch angle of the blades is realized.

The invention belongs to the technical field of mechanical part surface finishing machining, and aims to solve the problem that traditional barreling finishing machining is difficult to meet the requirements for high precision and uniformity of a large wind power gear ring. The vertical local forced excitation polishing and grinding method for the large wind power gear ring comprises the following steps that a to-be-polished and ground section of the to-be-polished and ground large gear ring is placed in a polishing and grinding container filled with a machining medium; and a vibration excitation element in the machining medium is driven to perform combined motion of radial intermittent feeding motion, axial intermittent feeding motion and reciprocating linear motion, and is matched with circumferential intermittent rotary motion of the large gear ring, so that a locally forced particle flow field is formed in the machining medium, and gear surface finishing machining is performed on the large gear ring to be polished and ground. According to the large gear ring polishing and grinding device, intense exciting force can be applied to a certain specific tooth surface part of a large gear ring in a targeted mode, local polishing and grinding are conducted in a centralized mode, consistent polishing and grinding of different parts of the tooth surface of the large gear ring can be achieved in an all-around mode at a time, and the surface roughness of the large gear ring can be reduced.

The invention discloses a local anti-pursuit method for an unmanned surface vehicle based on aggregation of spatial-temporal characteristics. At the present stage, a local navigation algorithm of an unmanned surface vehicle is mainly used for carrying out local collision avoidance path planning on dynamic obstacles in static and uniform linear motion, and the unmanned surface vehicle may be pursued due to behaviors such as out-of-control operation or malicious blocking, so that the navigation safety of the unmanned surface vehicle is greatly threatened. The invention provides an anti-pursuit path planning method suitable for a complex water surface environment, and the method comprises the steps: simulating a multi-source shipborne sensor to generate a simulation signal, providing environment perception data, constructing a coding structure of aggregated spatial-temporal characteristics, and distinguishing dynamic and static obstacles in a scene, and constructing an end-to-end navigation path planning model by adopting a value distributed reinforcement learning algorithm. According to the invention, the motion characteristics of the obstacle in the environment can be identified, so that the decision-making ability and the navigation robustness of the unmanned ship in a complex environment are enhanced.

The invention relates to the technical field of deep hole machining, and provides a multi-axis linkage machining system for drilling and milling the inner wall of a deep hole, which adopts a linear motion device to directly drive a cutter support module, omits a lead screw and other intermediate transmission links, shortens the non-cutting time, has high positioning precision, can improve the machining efficiency, and has lower operation noise and vibration. The processing environment can be improved; according to the workpiece clamping device, a second hollow rotating platform is connected with a chuck, the chuck clamps the workpiece, through program control, the second hollow rotating platform can drive the workpiece on the chuck to rotate and position at any angle, and the requirement for machining the workpiece by a drilling and milling cutter module is met; the problems of time waste, positioning errors and the like caused by secondary clamping are avoided, and the workpiece machining efficiency is improved; a tool bit of the drilling tool module is fed by adopting a variable-diameter structure (a tool bit feeding assembly), and drilling and milling can be carried out on the inner walls of deep hole type workpieces with complex inner hole shapes such as bottleneck holes and stepped holes.

The invention discloses a wind turbine blade semi-coupling aeroelastic modeling method considering nonlinear deformation, and belongs to the technical field of fan simulation calculation. In combination with calculation parameters used by three-party software, establishing a blade structured load model and a blade correction aerodynamic model, calculating an aerodynamic load and a structural load, and superposing: superposing the aerodynamic load, the gravity load and the centrifugal force load of the blade as an external load of a nonlinear structure control equation of the blade, and taking the external load as a calculation parameter; according to the method, the blade nonlinear structure model and the semi-coupling simulation process of the three-party wind turbine simulation software are constructed, and under the same simulation environment and load conditions, the blade nonlinear structure model and the three-party wind turbine simulation software can be subjected to semi-coupling simulation, so that the blade nonlinear structure model and the three-party wind turbine simulation software can be subjected to semi-coupling simulation calculation. The higher-precision non-linear motion response characteristics of the super-long flexible wind turbine blade are calculated, and a good effect can be achieved in the aspects of initial structure design and response evaluation of the large wind turbine blade.

The invention discloses continuous automatic stamping equipment and a stamping method, and relates to the technical field of continuous automatic stamping, the continuous automatic stamping equipment comprises a stamping table, the outer wall of the top of the stamping table is fixedly connected with a top plate, and one side of the top plate is fixedly connected with a positioning table used for fixing when a stamping part is stamped; a positioning assembly is arranged at the top of the top plate, a hydraulic rod is fixedly connected to the top of the top plate, a fixing plate is fixedly connected to the output end of the hydraulic rod, a stamping head is fixedly connected to the outer wall of the bottom of the fixing plate, and a stamping groove matched with the stamping head is formed in the top of the stamping table. The outer wall of the top of the stamping table is fixedly connected with a sliding column. According to the continuous punching device, linear motion of the hydraulic rod is converted into gear transmission and swing of the swing rod through power coupling, impact is relieved through an elastic buffering structure, precise positioning, stable clamping and equidistant displacement of a punching part are achieved through mechanical closed-loop linkage, and high efficiency and stability of continuous punching are guaranteed.

The invention relates to the technical field of transformer coil detection, and discloses a detection device for a transformer coil, which comprises a base frame, the driving mechanism is installed on the base frame and used for providing linear motion in the X direction, the Y direction and the Z direction; according to the scheme, by means of the detection mode that spiral scanning motion is combined with self-adaptive contact and laser ranging, the fatal defects that manual detection is low in efficiency, high in subjectivity and prone to making mistakes and missing detection are overcome, complete three-dimensional shape data of the surface of the coil can be rapidly and accurately obtained, and the detection accuracy is improved. According to the method, local fine defects which are difficult to discover manually can be detected, the reliability and the consistency of detection results are improved, objective and quantitative data support is provided for evaluating the winding quality, the mechanical strength and the long-term operation reliability of a transformer coil, and the manufacturing quality of a transformer and the operation safety of a power grid are guaranteed.

An actuator arrangement (1) for an inlet air valve of a compressor system of a mining machine, the actuator arrangement comprises a linear actuator (11) compris- ing a movable element (10), operatively connected via a lever mechanism (6, 7, 8, 9; 6, 7, 8, 9, 91, 92) to a shaft (4) of a closing element (3) of the inlet air valve. A linear movement of the movable element (10) of the linear actuator (11) is transmitted via the lever mechanism to a rotation movement of the shaft (4) of the closing element (3) of the inlet air valve, wherein a transmission ratio of the lever mechanism is configured to vary during a movement of the movable element (10) of the linear actuator (11).

The invention discloses a fitting device for bearing assembly, and belongs to the technical field of bearing machining, the fitting device comprises a device main body used for fixing the whole assembly of the device, and a controller is arranged in the device main body and used for controlling the whole work of the device; the device further comprises a fixed base. A guide groove is formed in one side of the fixed base, and a collecting groove is formed in the bottom of one end of the guide groove through bolts. The device has the beneficial effects that a single power source of the hydraulic cylinder serves as a core, whole-process coupling of blanking, stepping, press fitting, ejection and reset is completed through reciprocating linear motion of the lifting plate, and one-time precise sleeving of a bearing body and a bearing seat in a sliding plate hole site is achieved; when the hole position reaches the press-fitting center, the ejector rod continues to move downwards to complete interference press-fitting, a closed-loop circulation without manual intervention is formed, and therefore the takt time is remarkably shortened, and the equipment utilization rate and the operation safety are improved.

The invention discloses a portable surveying and mapping device for forest resource investigation. The portable surveying and mapping device comprises a storage box, a surveying and mapping instrument and a bracket, a surveying instrument storage cavity and a bracket storage cavity are sequentially formed in the storage box from top to bottom; the upper portion of the surveying instrument storage cavity is of an opening structure, a lifting table and a lifting driving mechanism used for driving the lifting table to do linear motion are arranged in the surveying instrument storage cavity in a sliding mode in the vertical direction, and the surveying instrument is fixedly arranged on the upper portion of the lifting table; the support comprises a mounting plate, a supporting assembly is arranged on one side of the mounting plate, and a connecting assembly is arranged on the other side of the mounting plate. The device is very convenient to assemble and disassemble, can be quickly unfolded and stored during field operation in a forest area, and effectively improves the surveying and mapping operation efficiency during forest resource investigation.

The invention provides a vibration test bench, and relates to a vibration test device, and the vibration test bench comprises a pedestal, and a plurality of vibration frames which are arranged on the pedestal in parallel at intervals and are sequentially arranged on the pedestal from top to bottom; each sliding guide rail is arranged between every two adjacent vibration frames and between the vibration frame on the lowermost layer and the base, and the guide directions of the sliding guide rails are different from one another; each driving mechanism is fixedly connected to the vibration frame located on the lower layer or the base and drives the vibration frame located on the upper layer to do reciprocating rectilinear motion along the corresponding sliding guide rail. Each locking mechanism is arranged between every two adjacent vibrating frames and between the vibrating frames and the base, and each locking mechanism can selectively lock the reciprocating motion of the vibrating frame located on the upper layer; the control unit is in communication connection with all the driving mechanisms and independently controls operation of all the driving mechanisms. The vibration test bench can realize multi-degree-of-freedom movement, and has a broadband vibration frequency / amplitude adjusting function.

The invention discloses a high-precision multi-layer sliding shaft clamp based on a wedge-shaped guide rail structure, and relates to the field of micro-lens array manufacturing and other ultra-precision machining. The problem that in the ultra-precision machining process, when a machine tool is not provided with a guide rail in the vertical direction, centering cannot be efficiently achieved is solved, and the problems that in a traditional centering mode, operation is tedious, the installation and adjustment time is long, the production cost is high, and the machining efficiency is low are solved. A second-stage bottom plate relatively sliding in the ascending direction is arranged above a first-stage bottom plate, and a servo motor transmits power to a transmission mechanism to achieve horizontal linear motion of the second-stage bottom plate relative to the first-stage bottom plate; a third-level bottom plate which relatively slides in the ascending direction is arranged above the second-level bottom plate, a main shaft holding clamp which relatively slides in the direction perpendicular to the ascending direction is arranged above the third-level bottom plate, and the first-level bottom plate and the second-level bottom plate, the second-level bottom plate and the third-level bottom plate and the third-level bottom plate and the main shaft holding clamp are detachably connected through locking pieces. The device is used for achieving vertical centering work of the machine tool spindle.

The invention discloses welding equipment for hardware machining and a welding method of the welding equipment, and particularly relates to the technical field of welding. A welding gun mounting part is arranged at the top of the moving seat, a welding gun is detachably connected to the welding gun mounting part, and a translation driving part used for driving the moving seat to do horizontal linear motion is arranged at the top of the moving seat; and the positioning and clamping part is connected to one side of the top of the base, and a welding cutter feeding part is arranged on the welding gun mounting part and used for driving the welding gun mounting part to gradually move towards the positioning and clamping part when the movable seat horizontally moves. By arranging the translation driving part and the welding cutter feeding part, during welding, the translation driving part drives the welding gun to do horizontal linear motion, so that the welding gun conducts linear welding on the welding position of the hardware, the welding cutter feeding part drives the welding gun to move in the direction of the hardware while the welding gun does horizontal motion, and the welding gun can conduct automatic cutter feeding in the welding process; and the dependence on the working experience of workers is reduced.

To provide a runner chuck and take-out device that can quickly pinch with low power consumption.SOLUTION: The runner chuck 20 has a pair of gripping jaws 22, which are oppositely arranged and mounted to be opened and closed, and a magnetic element 33, which can move linearly, and when the magnetic element 33 moves linearly in the downward direction, the magnetic element 33 converts the linear motion to move the gripping jaws 22 in the closing direction, while the magnetic element 33 moves linearly in the upward direction. A link mechanism 24 that moves the gripping jaw 22 in the opening direction by converting its linear motion when the magnetic body 33 moves linearly in the upward direction, a spring member 25 attached to the magnetic body 33 in a compressed state that continues to exert elastic force in the downward direction, and an electromagnet 26 positioned opposite the magnetic body 33 in the upward direction of the magnetic body 33, An electric cylinder 27 to which the electromagnet 26 is attached and which can move the electromagnet 26 linearly in the upward direction.SELECTED DRAWING: Figure 4

A magnetic coupling pneumatic linear motion actuator incorporating a tube having a longitudinal end and an oppositely longitudinal end; a magnetic piston slidably mounted within the tube; a magnetic sleeve slidably mounted over the tube; longitudinal and oppositely longitudinal shoulders fixedly attached to or formed wholly with the tube, the longitudinal shoulder extending radially inwardly from the tube's longitudinal end, and the oppositely longitudinal shoulder extending radially outwardly from the tube's oppositely longitudinal end; a longitudinal end cap positioned at the tube's longitudinal end, the longitudinal end cap being adapted for releasable attachment to the longitudinal shoulder; and an oppositely longitudinal end cap positioned at the tube's oppositely longitudinal end, the oppositely longitudinal end cap being adapted for releasable attachment to the oppositely longitudinal shoulder.

Provided is an optical displacement meter capable of solving problems such as dustproof and safety at the time of an operation and acquiring profiles of a plurality of positions of a workpiece with high accuracy without providing a conveyor or a linear motion mechanism. An optical displacement meter includes a light projecting and receiving module that integrally holds a light projecting unit, a light collecting unit, and a capturing unit to have a Scheimpflug relationship, a motor that integrally rotates the light projecting and receiving module, a housing that stores the light projecting and receiving module, and a control unit that controls the motor, and rotates the light projecting and receiving module in a state where the Scheimpflug relationship is maintained inside the housing to scan the slit light in a direction orthogonal to an X direction.

The utility model belongs to the field of parking space locks, and discloses a parking space lock which comprises a blocking piece, a locking piece and a locking piece. A driving unit; a transmission mechanism; a linear track; a substrate; when the driving unit drives the transmission part to move, the transmission part drives the moving part to slide along the linear rail and drives the connecting arm to slide along the linear rail and rotate relative to the moving part at the same time, so that the connecting arm drives the blocking part to turn over. When the blocking piece is subjected to external impact force in the open state, the blocking piece drives the connecting arm to move, the connecting arm drives the moving piece to slide relative to the linear rail, and the linear rail limits displacement of the moving piece in the direction perpendicular to the sliding direction of the moving piece. Power transmission is achieved through the transmission mechanism, the linear rail and the connecting arm are arranged independently, and the strength of the connecting arm and the transmission stability are guaranteed while the connecting arm moves; the linear track can assist the moving part in linear motion and can offset external impact force, so that the moving part is protected and prevented from being deformed and damaged; all the components can be integrated on the base plate, and therefore a user can conveniently install the parking space lock.